摘要
不同追肥时期对小麦产量的影响研究结果表明,以底肥225 kg/hm2,2月中旬追肥225 kg/hm2的施肥效果最佳,能有效减少不孕小穗、增加结实小穗、提高穗粒数、增加千粒重,从而提高产量。施肥过早不能达到理想产量,施肥过晚不但不能提高产量反而会降低产量。
The study results of effects of different fertilization stages on wheat yield showed that the most adequate fertilization was 225 kg/hm2 for base fertilizer and 225 kg/hm2 for additional fertilizer in the middle of February. It could reduce infertility spikelet,increase high quality spikelets, improve grain number and grain weight ,further to increase production ,fertilization could not reached satisfactory yield prematurely, it was too late for fertilization to increase production instead of reduce yields.
出处
《现代农业科技》
2013年第17期26-26,29,共2页
Modern Agricultural Science and Technology
关键词
小麦
追肥时期
产量
wheat
fertilization stages
production
